Muscles2 Flashcards by Tori Bulson

Biceps brachii
Flexes:
Extends:

Flexes the elbow

Extends the shoulder

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Biceps brachii
Origin
Insertion

Origin- medial side of distal scapula

Insertion- radius and ulna

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Triceps

Extends

Extends elbow

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Triceps
Origin
Insertion

Origin- lateral side of distal scapula and proximal humerus

Insertion- olecrannon of ulna

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Infraspinatus

Abduct and flex

Abduct and flex the shoulder

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Infraspinatus
Origin
Insertion

Origin: caudal side of lateral scapula
Insertion: greater tubercle of humerus

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Damage to the infraspinatus leads to

“Sweeney” (when a harness doesn’t fit properly, damages the infraspinatus )

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Chest muscles

Pectorals

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Pectorals

Adduct the

Thoracic limb

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Pectorals
Origin
Insertion

Origin: sternum
Insertion: humerus

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Caudal thigh muscles (semimembranosus and semitendinosus)
Extend
Flex

Extend the hip

Flex the stifle

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Caudal thigh muscles (semimembranosus and semitendinosus)
Origin
Insertion

Origin: tuber ischii
Insertion: proximal tibia

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Quadriceps femoris
Cranial thigh muscles
Extend the

Extend the stifle

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Quadriceps femoris
Origin
Insertion

Origin : femur

Insertion: tibia

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Rump muscles

Gluteal muscles

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Gluteal muscles
Extend the
Abduct the

Extend the hip

abduct the limb

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Injection site in beef cattle

Gluteal muscles

calf muscle connected to Achilles’ tendon

Gastrocnemius

Gastrocnemius
Flexes
Extends

Flexes stifle, extends hock

Gastrocnemius
Origin
Insertion

Origin: femur
Insertion: calcaneus

Adductor muscles

Adduct the

Adduct the hind limbs

Adductor muscles
Origin
Insertion

Origin: ventral pelvis
Insertion: femur and tibia

If this is injured a cow will “split” herself

Adductor muscles

Circular muscles around bodily openings

Sphincters

The anal sphincter is made of _____ muscle and _______ muscle

Skeletal and smooth

Sphincter around stomach outlet | What kind of muscle

Pyloric | Smooth muscle

Sphincter around eyes | What kind of muscle

Orbicular oculi | Skeletal muscle

The urethral muscle is made of what kind of muscle

Smooth and skeletal

Where the esophagus joins the stomach | What kind of muscle

Esophageal sphincter | Smooth and cardiac

Muscles that aid in arching back to urinate, defecate, give birth, cough, sneeze

Abdominal muscles

White line on abdomen with very little blood supply that is the landmark for abdominal surgery

Linea Alba

Muscles dorsal to the vertebrae

Expaxial (lumbar) muscles

Distal portions of limbs have tendons and ligaments but no ______

Muscles

Extensor muscles are located on the ______ (cranial/caudal) surface of limbs

Cranial

Flexor muscles are located on the _______(cranial/caudal)

Caudal

Sac filled with synovial fluid, between tendon and bone to prevent friction

Bursa

Overuse or infection of bursa leads to

Bursitis

Elongated bursa that surrounds a tendon. Found along tendons in legs

Synovial sheath it tendon sheath

Neck muscles

Bracheosephalic muscle and trapezius muscle

Jaw muscle

Masseter muscle

Examples of heartworm treatment medicine. | What is this medicine made with

Immiticide or diroban | Made with arsenic

The patella is located in which tendon

The quadriceps tendon